Today | Weather | Saturday, August 1, 2026

Active Weather Warnings

Special Weather Statement

Weather in McAllen, Texas

12:11 AM

Now

84° F

Feels Like 91°

Precipitation 0 %

Wind 13 mph

Humidity 79 %

Today

Day 106°

Night 81°

Precipitation 2 %

Wind 13 mph

UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

McAllen Weather Forecast Updated

12 minutes ago

Last updated on July 31, 2026 at 11:58 PM

Weather Forecast History

Last Year's Weather on This Day (August 1, 2025)

Day

104°

Night

79°

Wind

12 mph

Precipitation

25 %

Air Quality in McAllen

NOW

14 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 2.44 µg/m³

PM₁₀ 4.61 µg/m³

O₃ 0.015 ppm

NO₂ 0.3 ppb

SO₂ 0.1 ppb

CO 0.09 ppm

NH₃ 0.42 µg/m³

NO 0 µg/m³

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

NH₃ – Ammonia

NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 2.44 µg/m³

PM₁₀ – 4.61 µg/m³

O₃ – 29.44 µg/m³

NO₂ – 0.65 µg/m³

SO₂ – 0.29 µg/m³

CO – 105.36 µg/m³

NH₃ – 0.42 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for McAllen

Moderate Expected Observed

Special Weather Statement

Special Weather Statement issued July 31 at 10:40PM CDT by NWS Brownsville TX

Jul 31, 10:40 PM → Aug 1, 6:00 PM

The combination of hot temperatures and humidity will produce heat
index values between 105 and 111 degrees for several hours
Saturday afternoon into Saturday evening. A few locations may
briefly experience heat index values above 111 degrees.

If spending time outside today, drink plenty of water, wear light
weight and light colored clothing, and take frequent breaks from
the heat. Young children and pets should never be left unattended
in vehicles.

ATE

Updated: Jul 31, 11:58 PM Source: NWS Alert